#include<stdio.h>
#include<unistd.h>
int main()
{
    while(1)
    {
        sleep(1);
        printf("hello\n");
    }

    //int a = 0;
    //printf("please Enter#");
    //scanf("%d",&a);
    //printf("echo# %d\n",a);

    return 0;
}
